Better logging #33
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Better logging #33
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1) max constraint is now printed via typr printer, does not clog the output unless typr is set. 2) running a frontend phase informs what is run on which unit under -verbose.
Reason is we want to find out in what order files were compiled when a failure occurs.
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I meant review by @DarkDimius @samuelgruetter |
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Not really related to the changes of this PR, but to the topic "better logging" (I found this when inspecting this PR): In |
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@odersky I'm not sure if we should keep this verbose mode enabled in master. It will be just polluting log after being fixed. I've restarted travis build once again and it failed. See log https://travis-ci.org/lampepfl/dotty/builds/19964435 |
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Agree we can retract the tests commit. I minimized the problem now. See |
noti0na1
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to noti0na1/dotty
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Oct 28, 2019
Detect NotNull Annotations for Java Methods
odersky
referenced
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in dotty-staging/dotty
Jun 10, 2022
Some tests by Matt had cases where `.nn` figured prominently in the flamegraph.
I optimized it so that the fast path is streamlined and inlined.
In the following test code:
```
def x: String | Null = "abc"
val y = x.nn
```
the new implementation is
```
10: getstatic #20 // Field MODULE$:LTest$;
13: invokevirtual #24 // Method x:()Ljava/lang/String;
16: astore_0
17: getstatic #29 // Field scala/runtime/Scala3RunTime$.MODULE$:Lscala/runtime/Scala3RunTime$;
20: aload_0
21: invokevirtual #33 // Method scala/runtime/Scala3RunTime$.nn:(Ljava/lang/Object;)Ljava/lang/Object;
24: checkcast #35 // class java/lang/String
27: putstatic #37 // Field y:Ljava/lang/String;
```
The previous implementation was two bytes shorter, but contained in the critical path
- A call to a ScalaRuntime method, which was not inlineable by the JIT compiler due to its size,
- A conversion of a cmparison to a Boolean value (not sure this matters)
- A cast from the return type `Object` to the actual type.
bishabosha
referenced
this pull request
in dotty-staging/dotty
Oct 18, 2022
Some tests by Matt had cases where `.nn` figured prominently in the flamegraph.
I optimized it so that the fast path is streamlined and inlined.
In the following test code:
```
def x: String | Null = "abc"
val y = x.nn
```
the new implementation is
```
10: getstatic #20 // Field MODULE$:LTest$;
13: invokevirtual #24 // Method x:()Ljava/lang/String;
16: astore_0
17: getstatic #29 // Field scala/runtime/Scala3RunTime$.MODULE$:Lscala/runtime/Scala3RunTime$;
20: aload_0
21: invokevirtual #33 // Method scala/runtime/Scala3RunTime$.nn:(Ljava/lang/Object;)Ljava/lang/Object;
24: checkcast #35 // class java/lang/String
27: putstatic #37 // Field y:Ljava/lang/String;
```
The previous implementation was two bytes shorter, but contained in the critical path
- A call to a ScalaRuntime method, which was not inlineable by the JIT compiler due to its size,
- A conversion of a cmparison to a Boolean value (not sure this matters)
- A cast from the return type `Object` to the actual type.
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Review by DarkDimius.
It would be good to get the order of files compiled next time dotc-config fails.